Ochsner AIR BASIC 109, Operating Manual/Installation Manual

Page: 59 / 92

BA_AIR_BASIC_ELW_Multitower_OTE3_SW5x_CC_EN_V08.docx Page 59 of 92
8 Dealing with minor faults
Let only trained specialist personnel carry out adjustments and troubleshooting. Standard settings for the
controller are made by the contractor during commissioning. The operator / maintainer is responsible for
any corrections and program adjustments! (See the following table)
Fault/display Cause Solution
Energy generator fault high pressure
(
Er 36 )
Energy transfer not ensured
Heating circuits excessively restricted Open shut-off valves
one or more circulation pumps are not
pumping Re-establish function
Speed (output level) of heating circulation
pump too low Increase pump speed (stepper switch), delta
t = 5 K flow/return
Air in heating circuit Vent heating circuit
3-way switching valve faulty replace
Non-return valve stays shut loosen, replace
with optional external DHW heating:
- Heat exchanger too small
- Heat exchanger scaled up or silted up increase
Notify heating contractor, clean, descale
Controller set too high Correct switch-off point downwards, 55°C is
the highest temperature!!!!
Loose terminal connections Establish firm terminal connections
Heating system is not hot, heat
pump is hot up to buffer tank/low
loss header Energy transfer is interrupted or too low Replace circulation pump, vent heating
circuit, open gate valve, open control valves,
increase output level of DHW circulation
pump
Heat pump is running,
heating output too low Excessive heat demand Reduce heat load
Source system overstretched Reduce heat load
Heat pump is switched to boiler priority Check controller setting for DHW
Building design specification (e.g. thermal
insulation of building) Ensure building meets its design
specification
Heat pump only produces DHW but
does not heat or heats too late DHW target temperature is too high Reduce switch-off point
Controller is in summer mode Set controller to heating mode
Heat exchanger for DHW too small Increase size of heat exchanger
DHW heat exchanger scaled up Notify heating contractor,
clean, descale heat exchanger
DHW temperature not reached or
no longer reached Heat exchanger for DHW is too small Increase size of heat exchanger
Heat exchanger is scaled up Descale heat exchanger
Sensor positioned incorrectly Position correctly
Pipework too small Install larger pipes
Faulty DHW sensor replace
DHW charging pump faulty replace
DHW charging pump output level set too
low Set higher output levels
3-way switching valve faulty replace
Heat pump runs continually and
yields only low temperature; traces
of oil in the appliance Refrigerant leak
Loose fittings, refrigerant line leaking Switch off heat pump,
notify customer service
Power-off operating state A PSU lockout time from the energy supplier
is active
insufficient flow rate ( Er 91 ) The minimum flow rate at the heat pump is
not being reached. Buffer charging pump faulty, diverter valve
faulty, insufficient system pressure, flow
sensor faulty
Table 5: Troubleshooting
NOTE